Here you can find the descriptions, users manuals, supporting files (as schematics, gerber files, BOM, firmware upgrades, etc.). Also some articles are available.
Open corresponding part to see the files.
General:
Album Player - recommended - Album Player (Win/Linux/Raspberry-Pi/etc).
dsd_ch_check.rar - DSD Channel check
dsd6ch1khz.rar - 6-Channel DSD Test Files
bits_in_time.pdf - Article about the Jitter (ENG)
bits_in_time_rh413_4244v1.pdf - "RadioHobby"(c) magazine article (russian) , #4/2013.
DIY
Tacho-Strob Description and Gerber Files
TT-Conv Description and Gerber Files
Isolated Digital Interface Description and Gerber Files
AC INPUT for Power Amplifier Description and Gerber Files
DAC:
ATDAC-15 User Manual (ENG) ATDAC-15 User Manual (RUS) ATDAC-15 Firmware Update V1.10 .
ATDAC-12E User Manual (ENG) ATDAC-12E Описание и инструкция (RUS) Обновление
ATDAC-10S User Manual (ENG) ATDAC-10S Описание и инструкция (RUS)
ATDAC-810 User Manual (ENG) ATDAC-810 Описание и инструкция (RUS)
ATDAC-96 User Manual (ENG) ATDAC-96 Описание и инструкция (RUS)
ADC:
Olivine-2 Firmware Update (update process may not work under MacOS/Linux!)
JKGEN:
JKGEN-2 User Manual (ENG)
JKGEN-2 User Manual (RUS)
JKGEN-2 Remote Control Commands (ENG)
JKGEN-2 I2S Connector (ENG)
UM_JKGEN_RUS - Generator JKG 384-12, User Manual. (RUS)
UM_JKGEN_ENG.pdf - Generator JKG 384-12, User Manual. (ENG)
jkg_version.txt - JKG 384-12 Firmware Version History
jkg3_4_11b.rar - JKGEN Firmware V3_4_11b 15 Nov 2014.
JKILL
JKILL_DESCR_1_4eng.pdf - JKILL Description, v1.4 (ENG)
JKILL_DESCR_1_3.pdf - Dr. JKILL, Description (RUS). Ver. 1.3
JKILL LIGHT_ENG.pdf - JKill Light Description, ENG.
JKILL LIGHT.pdf - JKill Light Description, RUS.